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Hi, everyone, in this section, we're going to talk a little bit more about how to structure your



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Python code and actually put in operation way easier because, you know, when your lines of code increase,



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you actually need to have some structure behind your code.



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And you cannot simply just write a line after line without thinking for that reason.



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Today, we're going to concentrate on different functions, classes and structures that will help to



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structure your code and use it way easier.



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This will add more structure to your code and make it more professional.



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So let's start by digging into what are actually the functions and how you can create function in Python



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in order to help your code be more useful.



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So here I am in my IT and I will create the new Python project in which we're going to add our data.



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So let's create next python functions and then finish.



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So here you have your project and I will create and say this project project by Dev Module.



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So let's call the package Python one two.



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True.



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Let's create a function in the name of the module.



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Will the quote unquote.



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OK, so you can see that now we're here for our module created and let's start creating functions.



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So first of all, how will you find functions in Python?



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So in Python you define a function also by just three letters, D.F. space.



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And this is how you define the function that in our case, our quick function, that we will assign



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a task to the user and you see what they mean.



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So when writing a function after the def keyword, you need to write the name or the function.



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So the name of dysfunction will be holer underscore usque and then you write to Brackett's, that's



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it.



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And automatically it gets to lots of Start-Up, so that's fine.



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So after you create the name of the function, you should go to the inner innovational in order to write



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what is going to be the speech and say just function.



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So usually between just break ins you can pass parameters or you can choose not to pass any parameters



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to the function.



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But later on, I'm going to talk more about this as well.



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So let's our functional print task.



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So your homework does not hold up and then print and then the task.



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So the task will be declared eight variable in item.



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OK, so this is the function and now you can call the function.



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So in order to know when the function success is needed, I want this to sentence's print.



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Start and then print and OK.



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So between these two statements, I will call the function and how we do this by simply defining the



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name of the function.



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So homework task in the brackets.



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OK, this is how we are calling the function from the call.



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Now I will run the project and you can see here that we are getting all the messages, your homework



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task declare a variable in Python.



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So this was the most simple case of function because here you do not need to pass any parameters.



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You simply called the function name and basically what was written inside the function to start working



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towards the two print statements.



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Now, the function also can give parameters.



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For example, if I write here language, OK, this means that in order to make this function work,



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we need to pass a variable that is going to be assigned to language in our function, or we're going



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to use the language in order to refer to the variable in how this is done.



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So I will remove them from here and I will simply write to declare a variable loss language.



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OK.



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And then when you're calling the function here in the brackets, you're going to pass the variable that



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you would like to be displayed inside of code.



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So this means every time a call the function, you can change the result of dysfunction depending on



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the input parameters that you up inside it.



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So I will write here,



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even though we're doing five.



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Of course, our challenge here is you will see that when I run the top, you're getting your Java.



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Now, if I call the function again, but this time I write C++, then you'll see that we're going to



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have two results.



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And in the first one, we're going to Taba.



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In the second one, we're using C++.



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It is very important.



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We write functions that you need to pass a parameter to to be sure that you pass all the necessary parameters



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in that function in order to operate.



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For example, if I remove the C++ from the second function, this is where the parameter so the value



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of language will not be assigned to anything.



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And now if I run it, you can see that we're printing the first function.



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OK, but once we go to the second one, we're getting the title there.



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And this is because the function requires an argument, one argument which is called language and which



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is not possible.



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And for that reason, we we're getting the error here.



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Now, obviously, since we can pass one argument, you are also able to pass a second one.



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For example, let's assign the new variable here, which is going to the task.



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So I will sign language and thus.



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That's it, so now you can see here that the first thing we need is the language, so well, I want



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shovel and the next morning, what is a task force to do a job?



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And I'm right here right function.



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So I would like to write a function in job.



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If you're on the call now, you can see that we are getting quite a function eungella, which are both



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parameters that will pass the function.



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So now since to function as a task, I can simplify it.



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Thus you close and then just refer to the right to function.



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And next week I can write language close in here just to refer to the language.



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So I'll write here.



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And in that case, even though the basis of our parameters are on different positions, this will not



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interrupt the function and you get the right parameters on the right places.



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And as you can see here, we're getting quite a function in Java, as is supposed to be.